Warning: Brake fluid is highly toxic and may also damage painted surfaces.
1. Loosen one air bleed screw on the wheel and gently pump the brake pedal until almost all the old fluid is removed from the master cylinder. At the same time, constantly add fresh brake fluid to the reservoir to avoid air in the brake system.
2. Remove old brake fluid from the remaining wheels in the same manner.
3. After completing this work, tighten the air bleed screws and install protective caps on them, and also check the brake fluid level in the reservoir. Check the operation of the brakes while driving.